t.Fatalf("Test %d: error: expected = <nil>, got = %v", i+1, err)
			}
		}

		addrs := listener.Addrs()
		addrSet := set.NewStringSet()
		for _, addr := range addrs {
			addrSet.Add(addr.String())
		}

		if !addrSet.Equals(testCase.expectedAddrs) {
			t.Fatalf("Test %d: addr: expected = %v, got = %v", i+1, testCase.expectedAddrs, addrs)
		}

		listener.Close()
	}

}

// Family implements the Family method of Addr interface.
func (a *Inet6Addr) Family() int { return syscall.AF_INET6 }

// Addrs returns a list of interface addresses.
//
// The provided af must be an address family and name must be a data
// link name. The zero value of af or name means a wildcard.
func Addrs(af int, name string) ([]Addr, error) {
	eps, err := newEndpoints(af)
	if len(eps) == 0 {

			addr := IPAddr{IP: ip, Zone: zone}
			addrs = append(addrs, addr)
		}
	}
	sortByRFC6724(addrs)
	return addrs, canonical
}

// goLookupIP is the native Go implementation of LookupIP.
// The libc versions are in cgo_*.go.
func (r *Resolver) goLookupIP(ctx context.Context, network, host string, order hostLookupOrder, conf *dnsConfig) (addrs []IPAddr, err error) {

}

func getLbEndpointAddrs(eps []*endpoint.LbEndpoint) []string {
	addrs := make([]string, 0)
	for _, lbEp := range eps {
		addrs = append(addrs, lbEp.GetEndpoint().Address.GetSocketAddress().Address)
	}
	sort.Strings(addrs)
	return addrs

	SizeofRtMetrics        = 0x38
)

type ifMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	_       uint16
	Data    ifData
}

type IfMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	Data    IfData
}

type ifData struct {
	Type       uint8

	SizeofRtMetrics        = 0x70
)

type ifMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	_       uint16
	Data    ifData
}

type IfMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	Data    IfData
}

type ifData struct {
	Type       uint8

		}
		switch addr := addr.(type) {
		case *TCPAddr:
			if !wildcard && !addr.isWildcard() && !addr.IP.matchAddrFamily(tcp.IP) {
				continue
			}
			naddrs = append(naddrs, addr)
		case *UDPAddr:
			if !wildcard && !addr.isWildcard() && !addr.IP.matchAddrFamily(udp.IP) {
				continue
			}
			naddrs = append(naddrs, addr)
		case *IPAddr:

	SizeofRtMetrics        = 0x38
)

type ifMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	_       uint16
	Data    ifData
}

type IfMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	Data    IfData
}

type ifData struct {
	Type       uint8

	}
	delete(n.cache, name)
	addrs, ttl, err := n.resolve(name)
	// avoid excessive pushes due to small TTL
	if ttl < MinGatewayTTL {
		ttl = MinGatewayTTL
	}
	expiry := time.Now().Add(ttl)
	if err != nil {
		// gracefully retain old addresses in case the DNS server is unavailable
		addrs = entry.value
	}
	n.cache[name] = nameCacheEntry{
		value:  addrs,
		expiry: expiry,

	if err != nil {
		return nil, err
	}
	addrs := addrsi.([]IPAddr)
	if shared {
		clone := make([]IPAddr, len(addrs))
		copy(clone, addrs)
		addrs = clone
	}
	return addrs, nil
}

// ipAddrsEface returns an empty interface slice of addrs.
func ipAddrsEface(addrs []IPAddr) []any {
	s := make([]any, len(addrs))
	for i, v := range addrs {
		s[i] = v
	}
	return s
}